Deck 17: Critical Iv Calculations

Question 1

To administer critical care medications using an electronic infusion pump, dosage needs to be calculated in

A) gtt/h.
B) mL/h.
C) mL/min.
D) units/h.

Answer 1

mL/h.

Question 2

Orders based on body weight are often expressed as

A) flow rate per weight per time.
B) the amount of medication per weight in kilograms per unit of time.
C) drops per minute per pound.
D) the amount of mediation per weight in pounds per unit of time.

Answer 2

the amount of medication per weight in kilograms per unit of time.

Question 3

The adjustment of a medication administration rate based on its effect on a patient's heart rate is called

A) titration.
B) infusion.
C) alligation.
D) qsad.

Answer 3

titration.

Question 4

Which of the following are frequently titrated in response to the patient's vital signs to maintain the blood pressure within the normal range?

A) antiarrhythmic medications
B) analgesics
C) sedatives
D) vasoactive medications.

Question 5

If you know the total amount of medication, the total volume of solution, and the volume of solution the patient has received, you can determine the

A) weight-based amount to deliver.
B) dosage on hand.
C) dosage ordered.
D) amount of medication received.

Question 6

The goal of administering medications in critical care is to administer the

A) largest amount of medication to achieve the desired effect.
B) largest flow rate to achieve the desired effect.
C) least amount of medication to achieve the desired effect.
D) largest volume of solution to achieve the desired effect.

Question 7

The forces of blood flow that are often used as the basis for titration of medications are

A) hemodynamics.
B) vasoactives.
C) antiarrhythmics.
D) blood pressure.

Question 8

When a medication is to be titrated, the physician orders the drug, dosage range, starting dose, and the

A) constant rate.
B) desired effect.
C) patient's weight.
D) patient's BSA.

Question 9

Mrs. Hedge's weight has fluctuated by as much as 8 lb over the past 4 days. The prescriber is ordering an antibiotic that is ordered in mg/kg. To calculate the proper dose, the prescriber would need to use

A) her weight from yesterday.
B) her BSA.
C) her weight this morning.
D) her dry weight.

Question 10

When the patient's response exceeds the prescribed parameters at the minimal dose, you should

A) discontinue the infusion and notify the AP.
B) keep the infusion at the minimal rate.
C) continue to titrate the infusion upward.
D) lower the infusion rate and notify the AP.

Question 11

The minimum flow rate for this order is:

A) 0.5 mL/h
B) 200 mcg/min
C) 36 mL/h
D) 60 mL/h

Question 12

What is the maximum flow rate for this order?

A) 795 mcg/min
B) 120 mL/h
C) 30 mL/h
D) 79.5 mL/h

Question 13

The initial flow rate for this order is:

A) 0.5 mL/h
B) 200 mcg/min
C) 36 mL/h
D) 60 mL/h

Question 14

Ordered: Nitroglycerin 10 mcg/min IV
On hand: Nitroglycerin 25 mg in 250 mL D5W
The hourly flow rate for this order is:

A) 1 mg/h
B) 10 mg/h
C) 0.6 mg/h
D) 6 mL/h

Question 15

Ordered: Vasopressin 0.04 units/min IV
The hourly flow rate is:

A) 2.4 units/h
B) 2 mL/h
C) 2.4 mL/h
D) 50 mL/h

Question 16

Ordered: Morphine 4 mg/h IV
What is the hourly flow rate?

A) 8 mL/h
B) 4 mL/h
C) 50 mL/h
D) 1 mL

Question 17

Mr. Franklin has an infusion of dopamine to maintain his blood pressure. The infusion started with 800 mg/250 mL D5W at 8 mL/h, and over the past 5 hours it was titrated up to 15 mL/h. He has received 65 mL of the solution. How much dopamine has he received?

A) 2,080 mL
B) 20.8 mg
C) 208 mg
D) 2,080 mg

Question 18

Mr. Deere has an IV of morphine 2 mg/h that has been infusing since 2000 hours yesterday. It is currently 0700 hours. The concentration of morphine is . How much solution has he received?

A) 44 mL
B) 50 mL
C) 22 mL
D) 440 mL

Question 19

Mr. Jenkins has an IV of 2,000 mg of lidocaine in 500 mL D5W. The infusion was started at 3 mg/min and titrated up at 1 mg/min based on heart rhythm. He has received a total of 150 mL of solution. How much lidocaine has he received?

A) 60 mg
B) 200 mg
C) 150 mg
D) 600 mg

Question 20

When calculating the rate to administer a heparin solution in milliliters/hour, Q is the dosage unit, H is the dose on hand, A is the amount to administer, and D is the rate of

A) the dosage unit.
B) the amount to administer.
C) the desired dose.
D) mixing the solution.

Question 21

Which of the following methods is not used to calculate the rate to administer a heparin solution?

A) Fraction proportion
B) Alligation method
C) Formula method
D) Ratio proportion

Question 22

The hourly dose for a heparin solution is calculated as

A) gtt/min.
B) mL/h.
C) mL/min.
D) units/h.

Question 23

Which of the following would not be included in a heparin protocol?

A) Orders for IV bolus doses
B) Dosage based on BSA
C) Maximum dose
D) Initial or starting dose

Question 24

A loading dose of heparin is given to

A) increase the patient's clotting time.
B) more quickly reach the maximum dose.
C) achieve a therapeutic blood level of heparin.
D) decrease the toxicity of heparin.

Question 25

When performing dosage calculation for a high-alert medication, you should

A) show the syringe to another healthcare professional to verify the dosage.
B) show another healthcare professional the vial of medication to validate the dosage.
C) administer the medication as soon as you have calculated the dose.
D) have another healthcare professional calculate the dosage independently.

Question 26

DMFN would not include

A) oral and parenteral fluids.
B) IV flush fluids.
C) fluids used to flush a Foley catheter.
D) medications and diluents used for reconstitution.

Question 27

According to the excerpt from a heparin protocol, which of the following heparin dosages represents the maximum safe initial heparin infusion rate per 24 hours?

A) 35,000 units
B) 43,200 units
C) 49,600 units
D) 52,400 units

Question 28

The patient weighs 143 lb. According to this heparin protocol, what should the initial bolus dose be?

A) 1,500 units
B) 2,800 units
C) 4,300 units
D) 5,200 units

Question 29

You should always have another healthcare professional calculate and verify dosages of _______________ medications before administering.

Question 30

Calculate the amount to administer for a bolus dose of 75 units/kg for a person who weighs 165 lb: _______________.

On hand: see label.

Question 31

Calculate the amount to administer for a bolus dose of 10 units/kg for a 25 kg child: _______________.
On hand: see label

Question 32

Ordered: heparin infusion at 15 units/kg/h
On hand: 25,000 units heparin/500 mL D5W
The patient weighs 225 lb. Calculate the flow rate: _______________.

Question 33

Ordered: heparin infusion at 20 units/kg/h
On hand: 25,000 units heparin/500 mL D5W
The patient weighs 225 lb. The hourly dose is: _______________.

Question 34

Ordered: heparin infusion at 8 units/kg/h
On hand: 10,000 units heparin/250 mL D5W
The patient weighs 90 lb. Calculate the flow rate: _______________. (Round to the nearest tenth)

Question 35

The _______________ dose is a bolus dose given to achieve a therapeutic blood level of heparin.

Question 36

A heparin _______________ is a preprinted order set that is used to guide administration of IV heparin.

Question 37

Ordered: 10,000 units of Heparin in 500 mL D5W infusing at 20 mL/h. The hourly heparin dose is _______________.

Question 38

Ordered: 20,000 units of heparin in 250 mL D5W infusing at 12 mL/h. The hourly heparin dose is _______________.

Question 39

Ordered: 15,000 units of heparin in 500 mL D5W infusing at 25 mL/h. The hourly heparin dose is _______________.

Question 40

Ordered: 10,000 units of heparin in 250 mL D5W to deliver 1,600 units/h. The infusion pump should be set at _______________.

Question 41

Ordered: 25,000 units of heparin in 500 mL D5W to deliver 1,000 units/h. The infusion pump should be set at _______________.

Question 42

Ordered: 10,000 units of heparin in 250 mL D5W infusing at 22 mL/h via pump. The hourly dose for this infusion is _______________.

Question 43

Ordered: 25,000 units of heparin in 500 mL D5W infusing at 30 mL/h. The patient will receive _________________ of heparin in 24 hours

Question 44

If you were mixing an infusion of 7,500 units heparin IV bolus, you would select the bottle containing _______________ per milliliter.

Question 45

To administer a bolus of heparin 450 units IV push you would select the bottle containing _______________ per milliliter.

Question 46

Calculate the DMFN for a child weighing 6 kg: _______________.

Question 47

Calculate the DMFN for a child weighing 3.25 kg: _______________.

Question 48

Calculate the DMFN for a child weighing 17.83 kg: _______________.

Question 49

Calculate the DMFN for a child weighing 11 kg: _______________.

Question 50

The patient is an 84-year-old male, 6 ft 1 in. tall, weighs 210 lb, and has a creatinine clearance of 30 mL/min. Assume that the patient has impaired renal function. Ordered: Capastat 400 mg IM daily. If this is a safe dose, calculate the amount to administer: _______________. If it is not a safe dose, write: not safe. (Round to the nearest whole number)

Question 51

The patient is a 96-year-old female, 5 ft 1 in. tall, weighs 95 lb, and has a creatinine clearance of 10 mL/min. Assume that the patient has impaired renal function. Ordered: Capastat 100 mg IM daily. If this is a safe dose, calculate amount to administer: _______________. If it is not a safe dose, write: not safe.

Question 52

The patient is a 92-year-old male, 5 ft 10 in. tall, weighs 170 lb, and has a creatinine clearance of 6 mL/min diagnosed with a complicated urinary tract infection. Assume that the patient has impaired renal function. Ordered: Fortaz 500 mg IV q12h. Is this a safe dose to administer? Write: safe or not safe.

Question 53

The patient is a 94-year-old female, 5 ft 10 in. tall, weighs 170 lb, and has a creatinine clearance of 4 mL/min. She is diagnosed with a complicated urinary tract infection. Ordered: Fortaz 500 mg IV q 48 h. Is this a safe dose to administer? Write: safe or not safe.

Question 54

The patient is an 86-year-old male, 6 ft 5 in. tall, weighs 240 lb, and has a creatinine clearance of 40 mL/min. Ordered: Timentin 2 g IV q 6h. If this is a safe dose, calculate amount to administer: _______________. If it is not a safe dose, write: not safe.

Question 55

The total fluids a patient needs over 24 hours is known as _______________.

Question 56

Ordered: 500 mg of aminophylline in 250 mL D5W to deliver 28 mg/h. The infusion pump should be set at _______________.

Question 57

Ordered: Dopamine 400 mg in 250 mL D5W to deliver 4 mcg/kg/min to a 165 lb patient.
The infusion pump should be set at _______________. (Round to the nearest whole number)

Question 58

Ordered: 50 mg of nitroprusside in 250 D5W to deliver 2 mcg/kg/min to a 148 lb patient.
The infusion pump should be set at _______________. (Round to the nearest tenth)

Question 59

Ordered: 500 mg of aminophylline in 500 mL D5W at 42 mg/h. The infusion pump should be set at _______________.

Question 60

Ordered: 500 mg aminophylline in 250 D5W to infuse at 27 mL/h. The hourly dose of aminophylline is _______________.

Question 61

Ordered: 4 mg Norepinephrine in 250 mL D5W to infuse at 18 mcg/min. The infusion pump should be set at _______________.

Question 62

Ordered: Magnesium sulfate 4 g in 250 mL D5W to be infused at 1 g/h. The infusion pump should be set at _______________.

Question 63

Ordered: Lidocaine 2 g in 500 mL D5W to infuse at 8 mg/min. The infusion pump should be set at _______________.

Question 64

Ordered: 2 g of lidocaine in 250 mL D5W infuse at 50 mL/h. The hourly dose of lidocaine is _______________.

Question 65

Ordered: Dobutamine 500 mg in 250 mL to infuse at 75 mg/h for a patient weighing 176 lb. The maximum safe dosage of dobutamine is 40 mcg/kg/min. If this is a safe dose, calculate the flow rate: _______________. If the ordered dose is not a safe dose, write: not safe.

Question 66

Ordered: Dobutamine 500 mg in 500 mL D5W to infuse 90 mg/h for a patient weighing 116 lb. The maximum safe dose of Dobutamine is 40 mcg/kg/min. If this is a safe dose, calculate the flow rate: ______ If the ordered dose is not a safe dose, write: not safe.

Question 67

Ordered: Esmolol 5 g in 500 mL D5W to infuse at 125 mg/min for a patient weighing 135 lb. The maximum safe dose of Esmolol is 400 mcg/kg/min. If this is a safe dose, calculate the flow rate: _______________. If the ordered dose is not a safe dose, write: not safe.

Question 68

Mrs. Williamson's weight in kg is _______________. (Round to the nearest tenth)

Question 69

Calculate the desired dose of nesiritide for Mrs. Williamson: _______________. (Round to the nearest tenth)

Question 70

Calculate the amount to administer per minute: _______________.

Question 71

Calculate the flow rate: _______________.

Question 72

Calculate the starting flow rate for this patient: _______________.

Question 73

Calculate the maximum flow rate for this patient: _______________.

Question 74

The patient's blood pressure remains low and you increase the rate to 65 mL/h. Calculate the dosage per minute the patient is receiving at this time: _______________. (Round to the nearest whole number)

Question 75

Vasoactive medications, which cause the _______________ to dilate or constrict, are administered to maintain a patient's blood pressure.

Question 76

In an ICU, you would _______________ the dosage of some medications based on patient response.

Question 77

A(n) ___________ medication is administered to regulate the heart rate or rhythm.

Question 78

If a patient's weight is fluctuating, you should calculate weight-based medications using the patient's _______________ weight.

Question 79

Hemodynamics are the _______________ of blood flow.

Question 80

The goal of medication administration in critical care is to administer the least amount of medication needed to achieve the _______________ effect.